Cardboard (Polymaker) spool roller wall mount

I wanted to make sure my most used spools were easy to access while not taking up too much space around my printer. 
I designed this mount to easily fit the polyterra cardboard spools. they may fit other spool brands.

for each holder the BOM is as follows:
 

• 1x printed part
• 3x shoulder bolt M6 x 8 (ISO 7379)
• 3x 608 bearing
• 5x nut M6 (DIN 934)
• 2x Screw M6 (protruding between 5 and 8mm from the wall)

See drawing for more details.

This design is made for spools with a hole of Ø55mm and an inner diameter of Ø92mm

The spool will sit 24mm from the wall surface

I have made an extra bowden tube mount (attached as well) for bowden tubes with outer diameter of Ø4mm. The hole should be threaded after printing (M6 i believe)